Processing method, communication device, and storage medium

Abstract

By means of the technical solution of the present application, a secondary node is processed by means of configuration information and / or a handover command, such that a processing mechanism during an LTM handover is perfected, and a processing mode for a secondary cell is clearly determined, and thus an LTM handover mode can support the handover between different centralized units, thereby improving the applicability and / or diversity of the LTM handover.

Description

Processing method, communication device and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a processing method, communication equipment, and storage medium. Background Art

[0002] In existing protocols, the LTM (L1 / L2 Triggered Mobility) handover process is as follows: a terminal device reports measurement results, and a network device (such as a master node or a slave node) determines and notifies the terminal device to perform LTM handover.

[0003] During the process of conceiving and implementing the present application, the inventors discovered at least the following problems: there is a lack of a clear processing mechanism for the release or retention of SCG (Secondary Cell Group) caused by LTM switching of different central unit master nodes.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical Solutions

[0005] The main purpose of this application is to provide a processing method, a communication device and a storage medium, aiming to improve the processing mechanism during the LTM switching process to improve the applicability of LTM switching.

[0006] This application provides a processing method that can be applied to a terminal device (such as a mobile phone), comprising the following steps:

[0007] S2: Processing the secondary node based on the configuration information and / or the switching command.

[0008] Optionally, the method further comprises at least one of the following:

[0009] The configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information;

[0010] The switching command includes a secondary node retaining indication and / or a secondary node releasing indication.

[0011] Optionally, step S2 includes at least one of the following:

[0012] If the configuration information and / or the switching command includes a secondary node retention indication, retaining the secondary node;

[0013] If the configuration information and the switching command do not include a secondary node retention indication, the secondary node is released;

[0014] If the configuration information and / or the handover command includes a secondary node release instruction, releasing the secondary node;

[0015] If the configuration information and the switching command do not include a secondary node release indication, the secondary node is retained;

[0016] If the secondary node retention indication is the first value, the secondary node is retained;

[0017] If the secondary node retention indication is the second value, releasing the secondary node;

[0018] If the auxiliary node release indication is the first value, the auxiliary node is released;

[0019] If the auxiliary node release indication is the second value, the auxiliary node is retained;

[0020] If the multi-link dual-link secondary cell group configuration information is reserved, the secondary node is retained;

[0021] If the multi-link dual-link secondary cell group configuration information is release, the secondary node is released.

[0022] Optionally, the method further comprises at least one of the following:

[0023] The secondary node retention indication and / or the secondary node release indication is indicated by a reserved bit;

[0024] The auxiliary node retention indication and / or auxiliary node release indication are indicated through a newly added field;

[0025] The processing method is applied to at least one of the following scenarios: master node handover of different central units, LTM handover of a master cell group, and dual link handover.

[0026] The present application also provides a processing method, which can be applied to a network device (such as a source master node), comprising the steps of:

[0027] S1: Send configuration information and / or a switching command, so that the terminal device processes the secondary node based on the configuration information and / or the switching command.

[0028] Optionally, the method further comprises at least one of the following:

[0029] The configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information;

[0030] The switching command includes a secondary node retaining indication and / or a secondary node releasing indication.

[0031] Optionally, the method further comprises at least one of the following:

[0032] Sending a handover request signaling to the candidate master node;

[0033] Sending a secondary node release request signaling to the secondary node;

[0034] Receive a handover request confirmation signaling sent by the candidate master node;

[0035] Sending configuration information via radio resource control reconfiguration signaling;

[0036] The secondary node retention indication and / or the secondary node release indication is indicated by a reserved bit;

[0037] The auxiliary node retention indication and / or auxiliary node release indication are indicated through a newly added field;

[0038] The processing method is applied to at least one of the following scenarios: master node handover of different central units, LTM handover of a master cell group, and dual link handover.

[0039] Optionally, the method further comprises at least one of the following:

[0040] The source master node and the candidate master node are base stations of different central units;

[0041] The handover request signaling and / or the handover request confirmation signaling carries the secondary node retention indication;

[0042] The handover request signaling and / or the handover request confirmation signaling carries a secondary node release indication;

[0043] The secondary node release request signaling carries a secondary node retention indication and / or a secondary node release indication;

[0044] The secondary node release request signaling is used to instruct to retain or release the secondary node, and / or to instruct to perform LTM switching;

[0045] The radio resource control reconfiguration signaling includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information.

[0046] Optionally, the terminal device processes the secondary node based on the configuration information and / or the handover command, including at least one of the following:

[0047] If the configuration information and / or the handover command includes a secondary node retention indication, the terminal device retains the secondary node;

[0048] If the configuration information and the handover command do not include a secondary node retention indication, the terminal device releases the secondary node;

[0049] If the configuration information and / or the handover command includes a secondary node release instruction, the terminal device releases the secondary node;

[0050] If the configuration information and the handover command do not include a secondary node release indication, the terminal device retains the secondary node;

[0051] If the secondary node retention indication is the first value, the terminal device retains the secondary node;

[0052] If the secondary node retention indication is the second value, the terminal device releases the secondary node;

[0053] If the secondary node release indication is the first value, the terminal device releases the secondary node;

[0054] If the secondary node release indication is the second value, the terminal device retains the secondary node;

[0055] If the multi-link dual-link secondary cell group configuration information is reserved, the terminal device retains the secondary node;

[0056] If the multi-link dual-link secondary cell group configuration information is released, the terminal device releases the secondary node.

[0057] The present application also provides a communication device, comprising: a memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program implements the steps of any of the above-described processing methods when executed by the processor.

[0058] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a master node or a slave node). The specific reference needs to be clarified based on the context.

[0059] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the processing methods described above are implemented.

[0060] The technical solution of the present application processes the auxiliary node through configuration information and / or switching commands, improves the processing mechanism in the LTM switching process, clarifies the processing method of the auxiliary cell, enables the LTM switching method to support switching between different central units, and improves the applicability and / or diversity of LTM switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0062] FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0063] FIG2 is a diagram of a communication network system architecture provided by an embodiment of the present application;

[0064] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0065] FIG4 is a schematic diagram of the hardware structure of a network node 150 provided in this application;

[0066] FIG5 is a schematic flow chart of a processing method according to the first embodiment;

[0067] FIG6 is a schematic flow chart of a processing method according to a second embodiment;

[0068] FIG7 is a schematic diagram of an interaction sequence according to a third embodiment;

[0069] FIG8 is a schematic diagram of an interaction sequence according to a sixth embodiment;

[0070] FIG9 is a schematic flow chart of a processing method according to a ninth embodiment;

[0071] FIG10 is a first structural diagram of a processing device provided in an embodiment of the present application;

[0072] FIG11 is a second structural diagram of a processing device provided in an embodiment of the present application;

[0073] FIG12 is a schematic diagram of the structure of the communication device provided in an embodiment of the present application.

[0074] The purpose of this application, its features, and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and the accompanying text are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of this application to those skilled in the art by reference to specific embodiments.

[0075] Implementation Methods of the Application

[0076] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0077] It should be noted that, in this document, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element, and / or, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0078] It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the term "if," as used herein, may be interpreted as "upon," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the recited features, steps, operations, elements, components, items, types, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used herein, may be interpreted as inclusive, meaning any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”; and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0079] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0080] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0081] It should be noted that in this article, step codes such as S1 and S2 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial restriction on the order. When implementing the step, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the scope of protection of this application.

[0082] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0083] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0084] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a master node or a slave node). The specific reference needs to be clarified based on the context.

[0085] The terminal device may be implemented in various forms. For example, the terminal device described in this application may include intelligent terminal devices such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and other fixed terminal devices such as digital TVs and desktop computers.

[0086] The subsequent description will be made using a mobile terminal as an example. Those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the configuration according to the embodiments of the present application can also be applied to fixed-type terminal devices.

[0087] Please refer to Figure 1, which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application. The mobile terminal 100 may include components such as an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will understand that the mobile terminal structure shown in Figure 1 does not limit the mobile terminal. The mobile terminal may include more or fewer components than shown, or may combine certain components, or arrange the components differently.

[0088] The following is a detailed introduction to the various components of the mobile terminal in conjunction with Figure 1:

[0089] The RF unit 101 can be used to send and receive information or receive signals during calls. Specifically, it receives downlink information from the base station and transmits it to the processor 110 for processing. It also transmits uplink data to the base station. Typically, the RF unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and / or other components. Furthermore, the RF unit 101 can communicate with the network and other devices via wireless communication. The above-mentioned wireless communications can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G and 6G, etc.

[0090] WiFi is a short-range wireless transmission technology. A mobile terminal, through WiFi module 102, enables users to send and receive emails, browse web pages, and access streaming media, providing wireless broadband Internet access. Although FIG1 illustrates WiFi module 102, it is understood that it is not a required component of the mobile terminal and can be omitted as needed without altering the essence of the invention.

[0091] The audio output unit 103 can convert audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Furthermore, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, or the like.

[0092] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the GPU 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the RF unit 101 or the WiFi module 102. The microphone 1042 may receive sound (audio data) in operating modes such as a phone call mode, a recording mode, and a voice recognition mode, and may process such sound into audio data. In the phone call mode, the processed audio (voice) data may be converted into a format that can be transmitted to a mobile communication base station via the RF unit 101. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0093] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be described here.

[0094] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0095] The user input unit 107 can be used to receive input digital or character information and generate key signal input related to user settings and function control of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any other suitable object or accessory on or near the touch panel 1071) and drive corresponding connected devices according to a pre-set program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch direction and detects the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 110. It can also receive and execute commands sent by the processor 110. And / or, the touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power keys, etc.), a trackball, a mouse, a joystick, etc., and the specifics are not limited here.

[0096] Optionally, the touch panel 1071 may overlay the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. The processor 110 then provides a corresponding visual output on the display panel 1061 based on the type of touch event. Although in FIG1 , the touch panel 1071 and the display panel 1061 are shown as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, which is not limited to this specific embodiment.

[0097] The interface unit 108 serves as an interface through which at least one external device can be connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

[0098] Memory 109 can be used to store software programs and various data. Memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store an operating system and at least one application required for a function (such as a sound playback function or an image playback function); the data storage area may store data generated based on the use of the mobile phone (such as audio data, a phone book, etc.). Furthermore, / or, memory 109 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0099] Processor 110 is the control center of the mobile terminal, connecting all components of the mobile terminal using various interfaces and circuits. By running or executing software programs and / or modules stored in memory 109 and accessing data stored in memory 109, it executes various functions of the mobile terminal and processes data, thereby providing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, processor 110 may integrate an application processor and a modem processor. Optionally, the application processor primarily handles the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 110.

[0100] The mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0101] Although not shown in FIG. 1 , the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail here.

[0102] To facilitate understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based is described below.

[0103] Please refer to Figure 2, which is a communication network system architecture diagram provided in an embodiment of the present application. The communication network system is an NR (New Radio) system of universal mobile communication technology. The NR system includes UE (User Equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, EPC (Evolved Packet Core) 203 and the operator's IP service 204, which are connected in sequence.

[0104] Optionally, UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.

[0105] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 . Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface). eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide access from UE 201 to EPC 203 .

[0106] EPC 203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gate Way) 2034, a PGW (PDN Gate Way) 2035, and a PCRF (Policy and Charging Rules Function) 2036. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, providing bearer and connection management. HSS 2032 provides registers for managing functions such as the Home Location Register (not shown) and stores user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, and it selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0107] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0108] Although the above introduction takes the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but can also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., which are not limited here.

[0109] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application. The controller 140 includes a memory 1401 and a processor 1402. The memory 1401 is used to store program instructions, and the processor 1402 is used to call the program instructions in the memory 1401 to execute the steps performed by the controller in the first embodiment of the above method. The implementation principles and beneficial effects are similar and will not be repeated here.

[0110] Optionally, the controller further includes a communication interface 1403, which can be connected to the processor 1402 via a bus 1404. The processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.

[0111] Figure 4 is a schematic diagram of the hardware structure of a network node 150 provided in this application. Network node 150 includes: a memory 1501 and a processor 1502. Memory 1501 is used to store program instructions, and processor 1502 is used to call the program instructions in memory 1501 to execute the steps performed by the first node in the first embodiment of the above method. The implementation principles and beneficial effects are similar and will not be repeated here.

[0112] Optionally, the controller further includes a communication interface 1503, which can be connected to the processor 1502 via a bus 1504. The processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network node 150.

[0113] The integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The software function modules stored in a storage medium include a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute some of the steps of the methods of various embodiments of the present application.

[0114] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive solid state disk, SSD), etc.

[0115] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0116] First embodiment

[0117] 5 , which is a flow chart of a processing method according to a first embodiment, the processing method of this embodiment can be applied to a terminal device (such as a mobile phone), and includes the following steps:

[0118] S2: Processing the secondary node based on the configuration information and / or the switching command.

[0119] Optionally, the processing method is applied to at least one of a master node handover between different central units, a master cell group LTM handover, and a dual link scenario.

[0120] Optionally, the configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information.

[0121] Optionally, the switching command includes a secondary node retention indication and / or a secondary node release indication.

[0122] Optionally, the handover command is a Media Access Control Control Element (MAC CE).

[0123] Optionally, the secondary node retention indication and / or the secondary node release indication is indicated by a reserved bit, for example, a reserved bit in an LTM cell handover command.

[0124] Optionally, the secondary node retention indication and / or the secondary node release indication is indicated by a newly added field, for example, at least one bit is added to the LTM cell handover command.

[0125] Optionally, by enhancing the LTM cell switching command, the processing complexity of the terminal device on the secondary node when performing the switching of the primary node of different central units can be reduced and / or the signaling overhead can be reduced.

[0126] Optionally, by enhancing the LTM cell switching command, the design complexity of the terminal device can be reduced. The terminal device does not need to know in advance whether to retain or release the secondary node when performing the switching of the main node of different central units, thereby reducing the signaling overhead of the pre-configuration information.

[0127] Optionally, in this embodiment, the master node initiates LTM (L1 / L2 Triggered Mobility) switching preparation for different central units, determines whether the candidate master node retains or releases the secondary node when performing LTM switching, and / or determines whether to retain or release the SCG (Secondary Cell Group) configuration.

[0128] Optionally, new indication information is added to the interactive signaling between master nodes, including a secondary node retention indication (ltmKeepSCG) and a secondary node release indication (ltmReleaseSCG), which are used to indicate the retention or release of the secondary node. The retention or release of the secondary node and / or SCG configuration is determined by the master node.

[0129] Optionally, the interactive signaling between master nodes may be a handover request (Handover Request) and / or a handover request acknowledgment (Handover Request Acknowledge).

[0130] Optionally, by enhancing the interactive signaling between master nodes, the signaling overhead caused by additional signaling interaction is reduced.

[0131] Optionally, the master node instructs to retain or release the secondary node according to a configuration method of enhancing the existing information field multi-link dual-link-secondary cell group configuration (mrdc-SecondaryCellGroupConfig).

[0132] Optionally, by enhancing radio resource control configuration information, pre-configuration signaling overhead is reduced, and / or the complexity of determining the secondary node processing method when the terminal device and / or network device switches between different central unit master nodes is simplified.

[0133] Optionally, the radio resource control reconfiguration signaling and / or the LTM candidate cell configuration information includes a secondary node retention indication or a secondary node release indication, and an enhanced multi-link dual-link-secondary cell group configuration.

[0134] Optionally, the main node determines whether the terminal device is in a dual-link scenario. If it is determined that the terminal device is in a dual-link scenario, it determines whether to retain or release the secondary node based on at least one of the secondary node retention indication, secondary node release indication, and enhanced multi-link dual-link-secondary cell group configuration.

[0135] Optionally, the terminal device determines configuration information based on radio resource control reconfiguration signaling and / or LTM candidate cell configuration information, and determines whether to perform LTM switching on the target secondary node based on the secondary node retention indication and / or secondary node release indication in the configuration information.

[0136] Optionally, the LTM cell switching command carries a secondary node retention indication and / or a secondary node release indication.

[0137] Optionally, the terminal device determines whether to perform LTM switching on the target secondary node according to the secondary node retention indication and / or the secondary node release indication carried in the LTM cell switching command.

[0138] Optionally, the terminal device determines whether it is currently in a dual-link scenario. If the terminal device is in a dual-link scenario, it determines whether to retain or release the secondary node based on at least one of the secondary node retention indication and / or secondary node release indication and the enhanced multi-link dual-link-secondary cell group configuration.

[0139] In the technical solution of this embodiment, the secondary node is processed through configuration information and / or switching commands, the processing mechanism in the LTM switching process is improved, the processing method of the secondary cell is clarified, the LTM switching method can support switching between different central units, and the applicability and / or diversity of LTM switching is improved.

[0140] Second embodiment

[0141] 6 , which is a flow chart of a processing method according to a second embodiment, further discloses step S2 based on the first embodiment of the present application. Step S2 includes at least one of the following:

[0142] S201: If the configuration information and / or the handover command includes a secondary node retention indication, retain the secondary node;

[0143] S202: If the configuration information and the switching command do not include a secondary node retention indication, releasing the secondary node;

[0144] S203: If the configuration information and / or the handover command includes a secondary node release instruction, release the secondary node;

[0145] S204: If the configuration information and the switching command do not include a secondary node release instruction, retain the secondary node;

[0146] S205: If the secondary node retention indication is the first value, retain the secondary node;

[0147] S206: If the secondary node retention indication is the second value, release the secondary node;

[0148] S207: If the auxiliary node release indication is the first value, release the auxiliary node;

[0149] S208: If the secondary node release indication is the second value, retain the secondary node;

[0150] S209: If the multi-link dual-link secondary cell group configuration information is reserved, retain the secondary node;

[0151] S210: If the multi-link dual-link secondary cell group configuration information is release, release the secondary node.

[0152] Optionally, the terminal device may determine a handling method for the secondary node based on whether the configuration information includes a secondary node retention indication. Optionally, if the configuration information includes a secondary node retention indication, the secondary node is retained; if the configuration information does not include a secondary node retention indication, the secondary node is released.

[0153] Optionally, the terminal device may determine how to handle the secondary node based on whether the handover command includes a secondary node retention indication. Optionally, if the handover command includes a secondary node retention indication, the secondary node is retained; if the handover command does not include a secondary node retention indication, the secondary node is released.

[0154] Optionally, the terminal device may determine how to handle the secondary node based on whether the configuration information includes a secondary node release indication. Optionally, if the configuration information includes a secondary node release indication, the secondary node is released; if the configuration information does not include a secondary node release indication, the secondary node is retained.

[0155] Optionally, the terminal device may determine how to handle the secondary node based on whether the handover command includes a secondary node release indication. Optionally, if the handover command includes a secondary node release indication, the secondary node is released; if the handover command does not include a secondary node release indication, the secondary node is retained.

[0156] Optionally, the terminal device may determine how to handle the secondary node based on whether the configuration information and / or the handover command include a secondary node retention indication. Optionally, if either the configuration information or the handover command includes a secondary node retention indication, or if both the configuration information and the handover command include a secondary node retention indication, the secondary node is retained; and optionally, if neither the configuration information nor the handover command includes a secondary node retention indication, the secondary node is released.

[0157] Optionally, the terminal device may determine how to handle the secondary node based on whether the configuration information and / or the handover command include a secondary node release indication. Optionally, if either the configuration information or the handover command includes a secondary node release indication, or if both the configuration information and the handover command include a secondary node release indication, the secondary node is released; and optionally, if neither the configuration information nor the handover command includes a secondary node release indication, the secondary node is retained.

[0158] Optionally, the terminal device may determine a handling method for the secondary node based on a value of the secondary node retention indication. Optionally, if the value of the secondary node retention indication is a first value, retain the secondary node; and / or if the value of the secondary node retention indication is a second value, release the secondary node.

[0159] Optionally, the terminal device may determine a handling method for the secondary node based on a value of the secondary node release indication. Optionally, if the value of the secondary node release indication is a first value, the secondary node is released; and / or if the value of the secondary node release indication is a second value, the secondary node is retained.

[0160] Optionally, the first value and the second value are corresponding indication information, for example: the first value and the second value can correspond to "1" and "0" respectively, and the first value and the second value can also correspond to "True" and "False" respectively. In this embodiment, there is no specific limitation on the indication method of the two.

[0161] Optionally, the information field multi-link dual link-secondary cell group configuration (mrdc-SecondaryCellGroupConfig) can be determined according to the configuration information, and a new keep (Keep) indication is added to the information field to indicate whether the switching of different central unit main nodes or different central unit MCG switching retains the secondary node or releases the secondary node.

[0162] Optionally, the terminal device may determine a handling method for the secondary node based on the multi-link dual-link secondary cell group configuration information. Optionally, if the multi-link dual-link secondary cell group configuration information indicates retention, the secondary node is retained; and / or if the multi-link dual-link secondary cell group configuration information indicates release, the secondary node is released.

[0163] In the technical solution of this embodiment, whether to retain or release the secondary node can be determined through at least one of the secondary node retention indication, the secondary node release indication and the multi-link dual-link secondary cell group configuration information. By enhancing the existing signaling or introducing new signaling, the secondary cell can be elastically configured, the processing mechanism of the secondary cell during the LTM switching process is improved, and / or the signaling overhead can be reduced.

[0164] Third embodiment

[0165] 7 , which is a schematic diagram of an interaction sequence according to a third embodiment. This embodiment discloses a specific process of switching between different central units LTMs initiated by a master node.

[0166] Optionally, the source master node (Source Master Node) sends a handover request (HANDOVER REQUEST) signaling to the candidate master node (Candidate Master Node).

[0167] Optionally, the source master node is a base station to which the terminal device is initially connected.

[0168] Optionally, the candidate master node is a base station of a different central unit (Inter-CU), for example, a gNB.

[0169] Optionally, the number of candidate master nodes may be one or more, for example, master node 2, master node 3.

[0170] Optionally, the handover request signaling further carries at least one auxiliary node configuration information, including auxiliary node and terminal interface identifier (eg SN UE XnAP ID) and / or terminal context configuration, etc. For details, please refer to protocol TS 37.340.

[0171] Optionally, before sending the handover request signaling, the master node may also determine at least one secondary node configuration information and / or secondary cell group configuration information through a secondary node modification procedure (SN Modification procedure) initiated by the master node. For details, please refer to protocol TS 37.340.

[0172] Optionally, the handover request signaling may also be a newly introduced signaling, serving as interactive signaling between master nodes for configuring a Master Cell Group (MCG) LTM handover, such as MCG LTM Request.

[0173] Optionally, the handover request signaling further carries a secondary node retain indication or a secondary node release indication, for example, ltmKeepSCG or ltmReleaseSCG.

[0174] Optionally, the secondary node retention indication or the secondary node release indication is used to indicate retaining a secondary cell group (SCG) configuration or releasing an SCG configuration.

[0175] Optionally, the terminal context keep indication (UE Context Kept Indicator) is carried by enhancing the switching request signaling. Optionally, the indication is used to inform other candidate master nodes whether to retain the auxiliary node when performing switching of master nodes of different central units. For example: when the switching request command exists and / or carries the terminal context keep indication, when the terminal device performs LTM switching from other candidate master nodes to the source master node, the auxiliary node configuration is retained.

[0176] Optionally, the handover request signaling carries a secondary node retention indication or a secondary node release indication, which is used to instruct and / or notify other candidate master nodes whether to retain the secondary node when performing LTM cell handover.

[0177] Optionally, the candidate master node sends a secondary node addition request (Secondary Node Addition Request) signaling to the secondary node.

[0178] Optionally, in response to receiving the switching request signaling sent by the source master node, the candidate master node sends a secondary node adding request signaling to the candidate secondary node.

[0179] Optionally, if the candidate master node decides to retain the source auxiliary node configuration, the auxiliary node addition request signaling carries the source auxiliary node configuration, configuration terminal context information and / or auxiliary node and terminal interface identifier (for example: SN UE XnAP ID); or, if the candidate master node decides not to retain the source auxiliary node configuration, the auxiliary node addition request signaling does not carry the source auxiliary node configuration information.

[0180] Optionally, the secondary node feeds back a secondary node addition request acknowledgment (Secondary Node Addition Request Acknowledge) signaling to the candidate master node.

[0181] Optionally, the candidate master node responds to the handover request sent by the source master node by feeding back a handover request acknowledgment (HANDOVER REQUEST ACKNOWLEDGE) signaling.

[0182] Optionally, different central unit switching configurations may be candidate master node LTM switching configurations, including random access configuration, CSI resource configuration, CSI reporting configuration, central unit identification information, and other contents.

[0183] Optionally, the handover request confirmation signaling further carries a secondary node retention indication or a source secondary node configuration release indication, for example, ltmKeepSCG or ltmReleaseSCG.

[0184] Optionally, the retain secondary node indication is used to indicate whether the candidate primary node retains the secondary node or releases the secondary node.

[0185] Optionally, the switching request confirmation information can also carry a terminal context retention indication, and the indication information is used to inform the source master node whether to retain the auxiliary node when performing a master node switch of a different central unit. For example: when the switching request command exists and / or carries a terminal context retention indication, when performing LTM switching from the source master node to other candidate master nodes, the auxiliary node configuration is retained.

[0186] Optionally, determining whether to release the source auxiliary node based on the auxiliary node retention indication includes: releasing the source auxiliary node configuration and / or retaining the source auxiliary node configuration, for example: when ltmKeepSCG is TRUE, it means retaining the source auxiliary node configuration; and / or, when ltmKeepSCG is False or ltmKeepSCG is not configured, it means releasing the source auxiliary node configuration.

[0187] Optionally, determining whether to release the source auxiliary node according to the auxiliary node release indication includes: releasing the source auxiliary node configuration and / or retaining the source auxiliary node configuration, for example: when ltmReleaseSCG is TRUE or ltmReleaseSCG is configured, it means releasing the source auxiliary node configuration; and / or, when ltmReleaseSCG is False or ltmReleaseSCG is not configured, it means retaining the source auxiliary node configuration.

[0188] Optionally, the candidate master node carries a secondary node retention indication or a secondary node release indication through a switching request confirmation signaling to assist the source master node in generating LTM pre-configuration content. For example, the source master node generates pre-configuration information in LTM switching of different central unit master nodes based on the indication information responded by the candidate master node, determines whether the pre-configuration information of each candidate master node contains a secondary node retention indication or a secondary node release indication, and / or whether the multi-link dual-link-secondary cell group configuration setting in the pre-configuration information of each candidate master node is retained or released.

[0189] Optionally, the master node and / or candidate master node determine whether to retain or release the auxiliary node when performing LTM switching of master nodes of different central units between each other through switching request signaling and / or switching request confirmation signaling, and judge whether the cell switching command carries an auxiliary node retention indication or an auxiliary node release indication.

[0190] Optionally, the reserved secondary node indication is used to determine whether the secondary node configuration is released when the primary node performs LTM switching and / or LTM switching of different central units.

[0191] Optionally, the number of candidate master nodes is one or more, for example, master node 2, master node 3.

[0192] Optionally, the handover request confirmation feedback signaling also carries candidate master node data forwarding information, such as Xn-U location information.

[0193] Optionally, the handover request confirmation signaling may also be a newly introduced signaling used for interactive signaling between MCG LTM handover configuration master nodes, such as MCG LTM Request Acknowledge.

[0194] In the technical solution of this embodiment, the source master node sends a switching request signaling to the candidate master node, the candidate master node sends a secondary node addition request signaling to the secondary node, the secondary node feeds back a secondary node addition request confirmation signaling to the candidate master node, and the candidate master node feeds back a switching request confirmation signaling to the source master node. By enhancing the existing signaling and / or introducing new signaling, the flexible configuration of retaining or releasing the secondary cell during the LTM switching of different central unit control units is achieved, the flexibility of the configuration method is improved, and / or, the signaling overhead is reduced.

[0195] Fourth embodiment

[0196] Based on any of the foregoing embodiments of the present application, this embodiment further discloses the processing method in the foregoing embodiments, specifically disclosing a manner in which the source master node instructs the terminal device to retain or release the secondary node through radio resource control reconfiguration signaling.

[0197] Optionally, the source master node sends different central unit LTM switching configurations to the terminal device through radio resource control reconfiguration (RRCReconfiguration) signaling.

[0198] Optionally, the LTM switching configuration of different central units can be LTM-Config, including at least one of the candidate cell identifier (LTM-CandidateId), reference configuration (ltm-ReferenceConfiguration), candidate cell configuration (LTM-Candidate), early uplink synchronization configuration (EarlyUL-syncConfig), configured scheduling configuration (CG, Configured Grant Config), serving cell non-reset identifier (ltm-ServingCellNoResetID), no reset identifier (ltm-NoResetID), measurement resource configuration (LTM-CSI-ResourceConfig) and measurement reporting configuration (LTM-CSI-ReportConfig). For details, please refer to the TS 38.331Release 18 version protocol.

[0199] Optionally, the source master node generates radio resource control reconfiguration content and / or generates different central unit LTM switching configuration content according to the retaining secondary node indication or releasing source secondary node configuration indication provided by the candidate master node.

[0200] Optionally, the wireless resource control reconfiguration content and / or the LTM switching configuration content of different central units also include an indication of the source master node retaining the auxiliary node or an indication of releasing the source auxiliary node configuration, which is used to indicate whether to retain or release the auxiliary node and / or SCG configuration when the main nodes of other different central units are switched and / or the MCG is switched to the current main node.

[0201] Optionally, the radio resource control reconfiguration signaling includes a secondary node retention indication (eg, ltmKeepSCG) or a secondary node release indication (eg, ltmReleaseSCG), which is used to determine whether the MCG LTM handover releases the secondary node configuration or the SCG configuration.

[0202] Optionally, the LTM switching configurations of different central units further include a secondary node retention indication (eg, ltmKeepSCG) or a secondary node release indication (eg, ltmReleaseSCG), which is used to determine whether the MCG LTM switching releases the secondary node configuration or the SCG configuration.

[0203] Optionally, the LTM switching of different central units is continuous LTM switching.

[0204] Optionally, the LTM switching configuration of different central units also includes an information field multi-link dual link-secondary cell group configuration (mrdc-SecondaryCellGroupConfig), and the information field adds a retain (Keep) or release (Release) indication to indicate whether the main node switching of different central units or the MCG switching of different central units retains the secondary node or releases the source secondary node configuration.

[0205] Optionally, the terminal device responds to the radio resource control reconfiguration signaling sent by the master node and sends a radio resource control reconfiguration complete (RRCReconfigurationComplete) signaling to the master node.

[0206] Optionally, the radio resource control reconfiguration complete signaling is used to confirm that the base station configuration is acceptable.

[0207] In the technical solution of this embodiment, the source master node sends different central unit LTM switching configurations to the terminal device through wireless resource control reconfiguration signaling, carrying a secondary node retention indication or a secondary node release indication, which is used to indicate whether to retain or release the secondary node, clarifies the processing mechanism of the secondary cell during the LTM switching process, and improves the flexibility of the indication method.

[0208] Fifth embodiment

[0209] On the basis of any of the foregoing embodiments of the present application, this embodiment further discloses the processing method in the foregoing embodiments, and specifically discloses a method of instructing a terminal device to retain or release a secondary node through a switching command.

[0210] Optionally, the source master node sends downlink control information (DCI, Downlink Control Information).

[0211] Optionally, the downlink control information includes a cell identifier, so that the terminal device determines the cell to send the random access preamble based on the cell identifier information.

[0212] Optionally, the cell identifier is a candidate cell identifier.

[0213] Optionally, the downlink control information is used to trigger the terminal device to perform early uplink synchronization (Early UL synchronization) with the candidate master node.

[0214] Optionally, the terminal device confirms the candidate cell configuration based on the cell identification information carried in the downlink control information, and performs early uplink synchronization based on the candidate cell configuration, for example: sending a random access preamble.

[0215] Optionally, the terminal device indexes different central unit LTM switching configurations through cell identification information, for example: master node 2 and / or target master node.

[0216] Optionally, the terminal device also advances the uplink synchronization configuration through the cell identification information index and sends a random access preamble according to the uplink synchronization configuration.

[0217] Optionally, the candidate master node sends feedback information to the source master node in response to the random access preamble sent by the terminal device.

[0218] Optionally, the feedback information carries the candidate cell timing advance (TA).

[0219] Optionally, the feedback information may be carried by a handover success (HANDOVER SUCCESS) signaling or other inter-base station interaction signaling, such as MCG LTM Request Acknowledge.

[0220] Optionally, the feedback information further includes time advance information of the candidate secondary node.

[0221] Optionally, the feedback information carries time advance information of the candidate master node cell and / or the candidate secondary node cell.

[0222] Optionally, the terminal device performs measurement according to the layer 1 measurement configuration and reports the measurement result.

[0223] Optionally, the terminal device continuously reports the measurement result based on the measurement resource, and / or reports the measurement result after the measurement result satisfies the measurement event.

[0224] Optionally, the source master node sends a cell switch command (Cell switch command).

[0225] Optionally, the cell switching command carries identification information, triggering the terminal device to perform LTM switching based on the identification information.

[0226] Optionally, the cell switching command triggers LTM switching between different central units (Inter-CU LTM).

[0227] Optionally, the identification information is a cell identification and / or a candidate cell identification.

[0228] Optionally, the cell switching command is sent via MAC CE.

[0229] Optionally, the LTM handover command also carries at least one of time advance, uplink scheduling, and cell radio network temporary identifier.

[0230] Optionally, the time advance information includes time advance information of a target primary node and / or a target secondary node.

[0231] Optionally, the cell switching command further carries a secondary node retention indication or a secondary node release indication, which is used to instruct the terminal device to retain the secondary node or release the secondary node.

[0232] Optionally, the cell handover command indicates whether to retain the secondary node or release the secondary node through one bit of information. For example, when the bit indication is "1", it indicates that the secondary node is retained; and / or, when the bit indication is "0", it indicates that the secondary node is released. For another example, when the bit indication is "0", it indicates that the secondary node is retained; and / or, when the bit indication is "1", it indicates that the secondary node is released.

[0233] Optionally, the secondary node retention indication or the secondary node release indication is indicated by a reserved bit.

[0234] Optionally, the auxiliary node retention indication or the auxiliary node release indication is indicated by adding a field.

[0235] Optionally, the source master node determines or sets a secondary node retention indication or a secondary node release indication based on at least one of the candidate master node radio resource control configuration and / or ltmKeepSCG, ltmReleaseSCG in the LTM switching configuration of different central units and the multi-link dual link-secondary cell group configuration.

[0236] Optionally, the source master node also determines or sets the secondary node retention indication or the secondary node release indication based on the corresponding candidate master node terminal context retention indication. For example, when the candidate master node that is about to perform LTM switching has a terminal context retention indication and / or the terminal context retention indication is true (True), the cell switching command carries the secondary node retention indication.

[0237] Optionally, the master node determines whether the current terminal device is in dual connectivity (DC), for example: NR-DC. If the current terminal device is in a dual connectivity configuration, the cell switching command carries a secondary node retention indication or a secondary node release indication to instruct the terminal device to retain the secondary node or release the secondary node according to the indication information; and / or, if the current terminal device is not in a dual connectivity configuration, the cell switching command does not carry a secondary node retention indication or a secondary node release indication.

[0238] Optionally, the source master node sends a secondary node release request signaling to the source secondary node.

[0239] Optionally, the source master node determines whether to retain or release the secondary node based on at least one of the candidate master node wireless resource control configuration and / or ltmKeepSCG, ltmReleaseSCG, and multi-link dual-link-secondary cell group configurations in the LTM switching configuration of different central units. When it is determined to release the secondary node, a secondary node release request signaling is sent to the source secondary node.

[0240] Optionally, the source master node further determines whether to retain or release the secondary node according to the candidate master node terminal context retention indication corresponding to the candidate master node, and when it is determined to release the secondary node, sends a secondary node release request signaling to the source secondary node.

[0241] Optionally, the secondary node release request signaling carries a secondary node retention indication or a secondary node release indication, which is used to inform the secondary node whether to retain or release the secondary node when performing master node switching between different central units.

[0242] Optionally, the secondary node releases the secondary node configuration according to the secondary node release request signaling and / or the secondary node release indication.

[0243] Optionally, the source secondary node responds to the secondary node release request signaling sent by the source primary node, and feeds back a secondary node release request confirmation signaling to the primary node.

[0244] Optionally, when the cell switching command does not carry time advance information and / or the terminal device does not have target cell time advance information, a random access process is initiated.

[0245] Optionally, the terminal device determines a candidate cell based on the cell switching command identification information and performs LTM switching to the target cell.

[0246] Optionally, the terminal device sends the first uplink data and / or wireless resource control reconfiguration completion signaling based on the target master node time advance information.

[0247] Optionally, the target cell belongs to at least one of different central units, master nodes, primary cell groups, secondary nodes, and secondary cell groups.

[0248] Optionally, the LTM switching is LTM switching of different central units.

[0249] Optionally, the terminal device performs random access-free switching based on the time advance information.

[0250] Optionally, the terminal device receives new uplink scheduling and / or downlink scheduling and regards it as LTM switching completion, and regards the target cell as the serving cell.

[0251] Optionally, the target cell responds to the radio resource control reconfiguration completion signaling and / or the first uplink data sent by the terminal device, sends a new schedule and regards the LTM switching as completed.

[0252] Optionally, the terminal device confirms retaining the secondary node or releasing the secondary node according to the radio resource control configuration and / or the LTM switching configuration of different central units, including a retaining secondary node indication or a releasing source secondary node configuration indication, for example:

[0253] When ltmKeepSCG is TRUE and / or ltmKeepSCG is configured, the auxiliary node is retained; and / or, when ltmKeepSCG is False or ltmKeepSCG is not configured, the auxiliary node is released.

[0254] When ltmReleaseSCG is TRUE and / or ltmReleaseSCG is configured, the secondary node is released; and / or, when ltmReleaseSCG is False or ltmReleaseSCG is not configured, the secondary node is retained.

[0255] Optionally, the terminal device determines whether to retain or release the secondary node in different central unit main node switching and / or different central unit MCG switching based on the multi-link dual link-secondary cell group configuration in the central unit LTM switching configuration. For example: if the multi-link dual link-secondary cell group configuration in the different central unit LTM switching configuration is to retain, the secondary node LTM switching is performed; and / or, if the multi-link dual link-secondary cell group configuration is to release, the secondary node configuration is released.

[0256] Optionally, the terminal device determines whether it is in a dual link based on the current configuration, for example: NR-DC. If it is currently in a dual link configuration, it confirms retaining the secondary node or releasing the secondary node based on the secondary node retention indication, secondary node release indication and multi-link dual link-secondary cell group configuration of the wireless resource control configuration and / or different central unit LTM switching configuration; if it is not currently in a dual link configuration, it does not consider and / or ignores at least one of the secondary node retention indication, secondary node release indication and multi-link dual link-secondary cell group configuration.

[0257] Optionally, the cell handover command carries a secondary node retention indication or a secondary node release indication, which is used to indicate whether to retain the secondary node or release the secondary node.

[0258] Optionally, the target master node is transferred via radio resource control transfer (RRC Transfer) signaling.

[0259] Optionally, the radio resource control transfer signaling is used to send the first uplink data and / or RRC reconfiguration completion signaling to the target secondary node.

[0260] Optionally, when there is no signaling radio bearer 3 (SRB3) between the target secondary node and the terminal device, the first uplink data and / or RRC reconfiguration completion signaling is forwarded through the primary node.

[0261] Optionally, when a signaling radio bearer 3 exists between the terminal device and the secondary node, the terminal device may directly send the first uplink data and / or RRC reconfiguration completion signaling to the target secondary node.

[0262] Optionally, after switching to the target master node (eg, master node 2), the terminal device may also continuously switch to other master nodes (eg, master node 3).

[0263] In the technical solution of this embodiment, the enhanced LTM pre-configuration content enables the network device and / or terminal device to determine whether to retain or release the auxiliary node, and / or, the enhanced LTM switching command is used to instruct the terminal device to retain or release the auxiliary node, and / or, the complexity of the processing mechanism of the terminal device and / or network device for the auxiliary node is reduced.

[0264] Sixth embodiment

[0265] 8 , which is a schematic diagram of an interaction sequence according to a sixth embodiment. This embodiment discloses a specific process of switching between LTMs of different central units.

[0266] Optionally, based on any of the above embodiments, this embodiment further considers a scenario in which the auxiliary nodes belong to different central unit master nodes.

[0267] Optionally, the specific process of the source master node sending a switching request signaling to the candidate master node, the candidate master node sending a secondary node adding request signaling to the candidate secondary node, the candidate secondary node feeding back a secondary node adding request confirmation signaling to the candidate master node, and the candidate master node feeding back a switching request confirmation signaling to the source master node refers to the third embodiment and is not repeated in this embodiment.

[0268] Optionally, the source master node sends a secondary node release request signaling to the source secondary node.

[0269] Optionally, the secondary node release request signaling carries a secondary node retention indication (e.g., ltmKeepSCG) or a secondary node release indication (e.g., ltmReleaseSCG) to indicate whether the source secondary node releases the secondary node configuration when the primary node performs LTM switching and / or LTM switching of different central units.

[0270] Optionally, the secondary node release request signaling carries a terminal context retention indication, which is used to instruct the source secondary node whether to release the secondary node configuration when the primary node performs LTM switching and / or LTM switching between different central units.

[0271] Optionally, the secondary node retention indication is used to determine whether the primary node and / or MCG releases the secondary node configuration or releases the SCG configuration when performing LTM switching; the secondary node release indication can also be used to determine whether the primary node and / or MCG releases the secondary node configuration or releases the SCG configuration when performing LTM switching.

[0272] Optionally, the source master node may also carry information instructing the source slave node to retain the slave node configuration and / or release the source slave node configuration through other signaling, such as: slave node modification request signaling and / or slave node release request signaling, or introduce new signaling, such as: master node-secondary node retention request signaling.

[0273] Optionally, the source secondary node feeds back a secondary node release request confirmation signaling in response to the secondary node release request signaling sent by the source primary node.

[0274] Optionally, the candidate secondary node may also respond to the source primary node through other signaling, such as secondary node modification request confirmation signaling and / or secondary node release request confirmation signaling, or introduce new signaling, such as secondary node-primary node retention request confirmation signaling.

[0275] Optionally, the source master node sends different central unit LTM switching configurations to the terminal device through radio resource control reconfiguration (RRCReconfiguration) signaling.

[0276] Optionally, the LTM switching configuration of different central units can be LTM-Config, including at least one of the candidate cell identifier, reference configuration, candidate cell configuration, early uplink synchronization configuration, configuration scheduling configuration, service cell non-reset identifier, non-reset identifier, measurement resource configuration and measurement reporting configuration. For details, please refer to TS 38.331Release 18 version protocol.

[0277] Optionally, the source master node generates radio resource control reconfiguration content and / or generates different central unit LTM switching configuration content according to the retaining secondary node indication or releasing source secondary node configuration indication provided by the candidate master node.

[0278] Optionally, the wireless resource control reconfiguration content and / or the LTM switching configuration content of different central units also include an indication of the source master node retaining the auxiliary node or an indication of releasing the source auxiliary node configuration, which is used to indicate whether to retain or release the auxiliary node and / or SCG configuration when the main nodes of other different central units are switched and / or the MCG is switched to the current main node.

[0279] Optionally, the radio resource control reconfiguration signaling includes a secondary node retention indication (eg, ltmKeepSCG) or a secondary node release indication (eg, ltmReleaseSCG), which is used to determine whether the MCG LTM handover releases the secondary node configuration or the SCG configuration.

[0280] Optionally, the LTM switching configurations of different central units further include a secondary node retention indication (eg, ltmKeepSCG) or a secondary node release indication (eg, ltmReleaseSCG), which is used to determine whether the MCG LTM switching releases the secondary node configuration or the SCG configuration.

[0281] Optionally, the LTM switching of different central units is continuous LTM switching.

[0282] Optionally, the LTM switching configuration of different central units also includes an information field multi-link dual link-secondary cell group configuration (mrdc-SecondaryCellGroupConfig), and the information field adds a retain (Keep) or release (Release) indication to indicate whether the main node switching of different central units or the MCG switching of different central units retains the secondary node or releases the source secondary node configuration.

[0283] Optionally, the multi-link dual link-secondary cell group configuration determines the configuration content based on at least one of the secondary node retention indication, the secondary node release indication and the terminal context retention indication, for example: configuring the multi-link dual link-secondary cell group configuration based on the secondary node retention indication responded by the candidate master node, and / or configuring the multi-link dual link-secondary cell group configuration based on the secondary node release indication responded by the candidate master node, and / or configuring the multi-link dual link-secondary cell group configuration based on the terminal context retention indication responded by the candidate master node.

[0284] Optionally, configuring the multi-link dual link-secondary cell group configuration based on the secondary node retention indication responded by the candidate master node includes: when the secondary node retention indication is True or there is a secondary node retention indication, the multi-link dual link-secondary cell group is configured to be retained; and / or, when the secondary node retention indication is False or there is no secondary node retention indication, the multi-link dual link-secondary cell group is configured to be released.

[0285] Optionally, configuring the multi-link dual link-secondary cell group configuration based on the secondary node release indication responded by the candidate master node includes: when the secondary node release indication is True or there is a secondary node release indication, the multi-link dual link-secondary cell group is configured to be released; and / or, when the secondary node release indication is False or there is no secondary node release indication, the multi-link dual link-secondary cell group is configured to be retained.

[0286] Optionally, configuring the multi-link dual link-secondary cell group configuration based on the terminal context retention indication responded by the candidate master node includes: when the terminal context retention indication is True or there is a secondary node retention indication, the multi-link dual link-secondary cell group is configured to be retained; and / or, when the terminal context retention indication is False or there is no secondary node retention indication, the multi-link dual link-secondary cell group is configured to be released.

[0287] Optionally, the terminal device responds to the radio resource control reconfiguration signaling sent by the master node and sends a radio resource control reconfiguration complete (RRCReconfigurationComplete) signaling to the master node.

[0288] Optionally, the radio resource control reconfiguration complete signaling is used to confirm that the base station configuration is acceptable.

[0289] In the technical solution of this embodiment, the source master node sends different central unit LTM switching configurations to the terminal device through wireless resource control reconfiguration signaling, carrying a secondary node retention indication or a secondary node release indication, which is used to indicate whether to retain or release the secondary node, clarifies the processing mechanism of the secondary cell during the LTM switching process, improves the flexibility of the indication method, and / or reduces signaling overhead.

[0290] Seventh embodiment

[0291] Based on any of the foregoing embodiments of the present application, this embodiment further discloses the processing method in the foregoing embodiments, specifically disclosing a process of instructing a terminal device to perform early uplink synchronization through a source master node and / or a source slave node.

[0292] Optionally, the source master node sends downlink control information (DCI, Downlink Control Information).

[0293] Optionally, the downlink control information includes a cell identifier, so that the terminal device determines the cell to send the random access preamble based on the cell identifier information.

[0294] Optionally, the cell identifier is a candidate cell identifier.

[0295] Optionally, the downlink control information is used to trigger the terminal device to perform early uplink synchronization (Early UL synchronization).

[0296] Optionally, the cell identifier includes a candidate master node cell identifier and / or a candidate secondary node cell identifier.

[0297] Optionally, when the downlink control information carries the candidate secondary node cell identifier, it indicates that the terminal device is triggered to perform early uplink synchronization on the candidate primary node cell and the candidate secondary node cell.

[0298] Optionally, the terminal device determines whether to perform early uplink synchronization of the candidate secondary node based on the information field (mrdc-SecondaryCellGroupConfig) in the central unit LTM switching configuration, for example: receiving the downlink control information sent by the source master node, and determining whether to send a random access preamble to the candidate secondary node based on the multi-link dual link-secondary cell group configuration in the LTM switching configuration.

[0299] Optionally, the terminal device confirms the candidate cell configuration based on the cell identification information carried in the downlink control information, and performs early uplink synchronization based on the candidate cell configuration, for example: sending a random access preamble.

[0300] Optionally, the terminal device indexes different central unit LTM switching configurations through cell identification information, for example: master node 2 and / or target master node.

[0301] Optionally, the terminal device also advances the uplink synchronization configuration through the cell identification information index and sends a random access preamble according to the uplink synchronization configuration.

[0302] Optionally, the terminal device performs uplink synchronization on the candidate master node and / or candidate secondary node, for example, when the cell identifier includes the candidate secondary node cell identifier, a random access preamble is sent to the candidate master node cell and / or candidate secondary node cell.

[0303] Optionally, the terminal device confirms and / or determines whether to send a random access preamble according to a secondary node retention indication or a secondary node release indication in a radio resource control configuration and / or a LTM handover configuration of different central units, for example:

[0304] When ltmKeepSCG is TRUE and / or ltmKeepSCG is configured, a random access preamble is sent to the source secondary node; and / or, when ltmKeepSCG is False and / or ltmKeepSCG is not configured, no random access preamble is sent to the source secondary node.

[0305] When ltmReleaseSCG is TRUE and / or ltmReleaseSCG is configured, no random access preamble is sent to the source secondary node; and / or when ltmReleaseSCG is False and / or ltmReleaseSCG is not configured, a random access preamble is sent to the source secondary node.

[0306] Optionally, the terminal device determines whether it is in a dual-link scenario based on the current configuration, for example: NR-DC. If it is currently in a dual-link scenario, it confirms whether to send a random access preamble based on at least one of the secondary node retention indication, secondary node release indication and multi-link dual-link-secondary cell group configuration in the wireless resource control configuration and / or different central unit LTM switching configurations; and / or, if it is not currently in a dual-link scenario, it does not consider and / or ignores the secondary node retention indication, secondary node release indication and multi-link dual-link-secondary cell group configuration information.

[0307] Optionally, the candidate master node sends feedback information to the source master node in response to receiving the random access preamble sent by the terminal device.

[0308] Optionally, the feedback information carries the candidate cell timing advance (TA).

[0309] Optionally, the feedback information may be carried in handover success signaling or other inter-base station interaction signaling, such as MCG LTM Acknowledge.

[0310] Optionally, the feedback information further includes time advance information of the candidate secondary node.

[0311] Optionally, the feedback information carries time advance information of the candidate master node cell and / or the candidate secondary node cell.

[0312] Optionally, the candidate master node determines and / or judges whether to carry the timing advance information of the candidate master node cell and / or the candidate secondary node cell according to the secondary node retention indication or the secondary node release indication, for example:

[0313] When ltmKeepSCG is TRUE and / or ltmKeepSCG is configured, the time advance information of the candidate master node cell and the candidate secondary node cell is carried; and / or, when ltmKeepSCG is False and / or ltmKeepSCG is not configured, the time advance information of the candidate master node cell or the candidate secondary node cell is carried.

[0314] When ltmReleaseSCG is TRUE and / or ltmReleaseSCG is configured, the time advance information of the candidate master node cell or the candidate secondary node cell is carried; and / or, when ltmReleaseSCG is False and / or ltmReleaseSCG is not configured, the time advance information of the candidate master node cell and the candidate secondary node cell is carried.

[0315] Optionally, the candidate master node can also determine and / or judge whether to carry the time advance information of the candidate master node cell and / or the candidate secondary node cell based on the terminal context retention indication, for example: when the terminal context retention indication is TRUE and / or the terminal context retention indication is configured, the time advance information of the candidate master node cell and the candidate secondary node cell is carried; and / or, when the terminal context retention indication is False and / or the terminal context retention indication is not configured, the time advance information of the candidate master node cell or the candidate secondary node cell is carried.

[0316] Optionally, the candidate master node determines whether the current terminal device is in dual connectivity (DC), for example: NR-DC. If the current terminal device is in a dual connectivity configuration, it determines and / or determines whether to carry the time advance information of the candidate master node cell and / or the candidate secondary node cell based on the secondary node retention indication or the secondary node release indication; and / or, if the current terminal device is not in a dual connectivity configuration, it only carries the time advance information of the candidate master node.

[0317] Optionally, after receiving the signaling carrying the time advance information sent by the candidate secondary node, the candidate master node sends feedback information to the source master node.

[0318] Optionally, after the source master node sends downlink control information to trigger the terminal device to perform early uplink synchronization of the candidate master node, it determines and / or judges whether to notify the source slave node based on the slave node retention indication or the slave node release indication, for example: when ltmKeepSCG is TRUE and / or ltmKeepSCG is configured, notification signaling is sent to the slave node; and / or, when ltmKeepSCG is False and / or ltmKeepSCG is not configured, notification signaling is not sent; and / or, when ltmReleaseSCG is TRUE and / or ltmReleaseSCG is configured, notification signaling is not sent; and / or, when ltmReleaseSCG is TRUE and / or ltmReleaseSCG is configured, notification signaling is not sent; and / or, when ltmReleaseSCG is False and / or ltmReleaseSCG is not configured, notification signaling is sent to the slave node.

[0319] Optionally, after the source master node sends downlink control information to trigger the terminal device to perform early uplink synchronization of the candidate master node, it can also determine and / or judge whether to notify the source slave node based on the terminal context retention indication, for example: when the terminal context retention indication is TRUE and / or the terminal context retention indication is configured, notification signaling is sent to the slave node; and / or, when the terminal context retention indication is False and / or the terminal context retention indication is not configured, no notification signaling is sent;

[0320] Optionally, the source secondary node responds to the notification signaling received from the source master node and sends downlink control information to trigger the terminal device to perform early uplink synchronization on the candidate secondary node. Optionally, the notification signaling can be a secondary node release request signaling and / or interaction signaling between other existing master nodes and secondary nodes. This application is not limited to this.

[0321] Optionally, the source master node determines whether the current terminal device is in dual connectivity (DC), for example: NR-DC. If the current terminal device is in a dual-link configuration, it determines whether to send notification signaling based on the secondary node retention indication or the secondary node release indication to instruct the source secondary node to send downlink control information, and / or, if the current terminal device is not in a dual-link configuration, the secondary node retention indication or the secondary node release indication is not considered and / or ignored.

[0322] Optionally, the source slave node sends downlink control information.

[0323] Optionally, the downlink control information includes a cell identifier, so that the terminal device determines a candidate secondary cell and / or secondary node for sending a random access preamble based on the cell identifier information.

[0324] Optionally, the downlink control information is used to trigger the terminal device to perform early uplink synchronization (Early UL synchronization) with the candidate secondary node cell.

[0325] Optionally, the source secondary node determines whether to send downlink control information based on the retain secondary node indication or the release source secondary node configuration indication, for example:

[0326] When ltmKeepSCG is TRUE and / or ltmKeepSCG is configured, it means that the source auxiliary node configuration is retained and the source auxiliary node sends downlink control information; and / or, when ltmKeepSCG is False or ltmKeepSCG is not configured, it means that the source auxiliary node configuration is released and the source auxiliary node does not send downlink control information.

[0327] When ltmReleaseSCG is TRUE and / or ltmReleaseSCG is configured, it means that the source auxiliary node configuration is released and the source auxiliary node does not send downlink control information; and / or, when ltmReleaseSCG is False and / or ltmReleaseSCG is not configured, it means that the source auxiliary node configuration is retained and the source auxiliary node sends downlink control information.

[0328] When the terminal context retention indication is TRUE and / or the terminal context retention indication is configured, it means that the source auxiliary node configuration is retained and the source auxiliary node sends downlink control information; and / or, when the terminal context retention indication is False or the terminal context retention indication is not configured, it means that the source auxiliary node configuration is released and the source auxiliary node does not send downlink control information.

[0329] Optionally, the source auxiliary node determines whether the current terminal device is in dual connectivity (DC), for example: NR-DC. If the current terminal device is in a dual-link configuration, it determines whether to send downlink control information based on the auxiliary node retention indication or the auxiliary node release indication to instruct the terminal device to perform early uplink synchronization, and / or, if the current terminal device is not in a dual-link configuration, the auxiliary node retention indication or the auxiliary node release indication is not considered and / or ignored.

[0330] Optionally, the terminal device confirms the candidate cell configuration based on the cell identification information carried in the downlink control information, and performs early uplink synchronization based on the candidate cell configuration, for example: sending a random access preamble.

[0331] Optionally, the terminal device indexes different central unit LTM handover configurations through cell identification information, for example, the secondary node 2 and / or the target secondary node.

[0332] Optionally, the terminal device also advances the uplink synchronization configuration through the cell identification information index and sends a random access preamble according to the uplink synchronization configuration.

[0333] Optionally, the candidate secondary node sends feedback signaling to the candidate primary node in response to the random access preamble sent by the terminal device.

[0334] Optionally, the feedback signaling can be at least one of the auxiliary node addition request confirmation signaling, the auxiliary node modification request confirmation signaling, and the auxiliary node release request confirmation signaling, or it can be a newly introduced signaling, for example: auxiliary node-master node time advance information transmission signaling. In this embodiment, the name of the newly introduced signaling is not specifically limited.

[0335] In the technical solution of this embodiment, through the enhanced LTM pre-configuration content, the network device and / or terminal device can determine whether to perform early uplink synchronization with the candidate auxiliary node, and / or trigger the candidate master node and the candidate auxiliary node to perform early uplink synchronization through the same signaling, thereby reducing unnecessary signaling overhead, and / or, each node of the network device can determine whether to perform early uplink synchronization based on the configuration, thereby reducing the complexity of the processing mechanism.

[0336] Eighth embodiment

[0337] Based on any of the foregoing embodiments of the present application, this embodiment further discloses the processing method in the foregoing embodiments, specifically disclosing a process of instructing a terminal device to retain or release a secondary node through a switching command by a source master node and / or a source secondary node.

[0338] Optionally, the terminal device performs measurement according to the layer 1 measurement configuration and reports the measurement results.

[0339] Optionally, the measurement result is continuously reported according to the measurement resource and / or the measurement result is reported after the measurement result satisfies a measurement event.

[0340] Optionally, the continuously reported measurement results include measurement results of candidate master nodes and / or candidate secondary nodes.

[0341] Optionally, the measurement result is reported when the candidate master node and / or the candidate secondary node both meet the conditions.

[0342] Optionally, the source master node sends a cell switching command.

[0343] Optionally, the cell switching command carries identification information, triggering the terminal device to perform LTM switching based on the identification information.

[0344] Optionally, the cell switching command triggers LTM switching between different central units (Inter-CU LTM).

[0345] Optionally, the identification information is a cell identification and / or a candidate cell identification.

[0346] Optionally, the cell switching command is sent via MAC CE.

[0347] Optionally, the LTM handover command also carries at least one of time advance, uplink scheduling, and cell radio network temporary identifier.

[0348] Optionally, the time advance information includes time advance information of a target primary node and / or a target secondary node.

[0349] Optionally, the cell switching command further carries a secondary node retention indication or a secondary node release indication, which is used to instruct the terminal device to retain the secondary node or release the secondary node according to the indication information.

[0350] Optionally, the cell handover command indicates whether to retain the secondary node or release the secondary node through 1 bit of information, for example:

[0351] When the bit indicates "1", it means that the secondary node is retained; when the bit indicates "0", it means that the secondary node is released. Or:

[0352] When the bit indication is "0", it indicates that the secondary node is retained; when the bit indication is "1", it indicates that the secondary node is released.

[0353] Optionally, the secondary node retention or release indication is indicated by a reserved bit and / or a newly added field indication (Field).

[0354] Optionally, the source master node determines whether the current terminal device is in dual connectivity (DC), for example: NR-DC. If the current terminal device is in a dual-link configuration, the cell switching command carries a secondary node retention indication or a secondary node release indication to instruct the terminal device to retain the secondary node or release the secondary node; and / or, if the current terminal device is not in a dual-link configuration, the cell switching command does not carry a secondary node retention indication or a secondary node release indication.

[0355] Optionally, the source master node sends a secondary node release request signaling to the source secondary node.

[0356] Optionally, the source master node determines whether to retain or release the secondary node based on at least one of the ltmKeepSCG, ltmReleaseSCG, multi-link dual-link-secondary cell group configuration, and terminal context retention indication in the candidate master node wireless resource control configuration and / or the LTM switching configuration of different central units. When it is determined to release the secondary node, a secondary node release request signaling is sent to the source secondary node.

[0357] Optionally, the secondary node release request signaling carries a secondary node retention indication or a secondary node release indication, which is used to inform the secondary node whether to retain or release the secondary node when performing master node switching between different central units.

[0358] Optionally, the secondary node releases the secondary node configuration according to the secondary node release request signaling and / or the secondary node release indication.

[0359] Optionally, the source secondary node sends a cell switching command to the terminal device.

[0360] Optionally, the cell switching command carries identification information and / or time advance information, triggering the terminal device to perform LTM switching according to the identification information.

[0361] Optionally, the source secondary node sends the LTM cell switching command and / or carries the time advance information according to the time advance information provided by the source primary node.

[0362] Optionally, the source secondary node sends a cell switching command and carries the time advance information according to the secondary node LTM switching sent by the source primary node.

[0363] Optionally, the source secondary node responds to the secondary node release request signaling sent by the source primary node, and feeds back a secondary node release request confirmation signaling to the primary node.

[0364] Optionally, the terminal device determines a candidate cell based on the cell switching command identification information and performs LTM switching to the target cell.

[0365] Optionally, the target cell belongs to at least one of different central units, master nodes, primary cell groups, secondary nodes, and secondary cell groups.

[0366] Optionally, the terminal device sends a radio resource control reconfiguration completion and / or the first uplink data to the target master node.

[0367] Optionally, the LTM is switched between LTMs of different central units.

[0368] Optionally, the terminal device performs random access-free switching based on the time advance information.

[0369] Optionally, when the cell switching command does not carry time advance information and / or the terminal device does not have target cell time advance information, a random access process is initiated.

[0370] Optionally, the target cell sends a new schedule in response to the radio resource control reconfiguration completion and / or the first uplink data sent by the terminal device and regards the LTM switching as completed.

[0371] Optionally, the terminal device performs LTM switching according to the target master node time advance information and / or the target slave node time advance information.

[0372] Optionally, the terminal device performs secondary node LTM switching according to the cell switching command sent by the source master node and / or according to the cell switching command sent by the source secondary node.

[0373] Optionally, the terminal device confirms and / or determines whether to perform the secondary node LTM handover according to the secondary node retention indication or the secondary node release indication in the radio resource control configuration and / or the LTM handover configuration of different central units, for example:

[0374] When ltmKeepSCG is TRUE or ltmKeepSCG is configured, the secondary node LTM switch is performed; and / or, when ltmKeepSCG is False or ltmKeepSCG is not configured, the secondary node LTM switch is not performed, and / or the secondary node is released.

[0375] When the terminal context retention indication is TRUE or the terminal context retention indication is configured, the secondary node LTM switch is performed; and / or, when the terminal context retention indication is False or the terminal context retention indication is not configured, the secondary node LTM switch is not performed and / or the secondary node is released.

[0376] When ltmReleaseSCG is TRUE or ltmReleaseSCG is configured, the secondary node LTM switch is not performed and / or the secondary node is released; and / or, when ltmReleaseSCG is False or ltmReleaseSCG is not configured, the secondary node LTM switch is performed.

[0377] Optionally, after receiving the cell switching command sent by the source master node, the terminal device confirms and / or determines whether to perform the secondary node LTM switching based on the secondary node retention indication or secondary node release indication in the wireless resource control configuration and / or the LTM switching configuration of different central units.

[0378] Optionally, the terminal device determines whether to retain the secondary node or release the source secondary node in the main node switching of different central units and / or the MCG switching of different central units based on the multi-link dual link-secondary cell group configuration in the central unit LTM switching configuration. For example: if the multi-link dual link-secondary cell group configuration in the LTM switching configuration of different central units is retained, the secondary node configuration is retained and the secondary node LTM switching is performed; and / or, if the multi-link dual link-secondary cell group configuration is released, the secondary node configuration is released.

[0379] Optionally, the terminal device determines whether it is in a dual link based on the current configuration, for example: NR-DC. If it is currently in a dual link configuration, it confirms retaining the secondary node or releasing the secondary node based on at least one of the secondary node retention indication, secondary node release indication and multi-link dual link-secondary cell group configuration in the wireless resource control configuration and / or different central unit LTM switching configurations; and / or, if it is not currently in a dual link configuration, it does not consider and / or ignores the secondary node retention indication, secondary node release indication and multi-link dual link-secondary cell group configuration.

[0380] Optionally, the terminal device retains the secondary node or releases the secondary node according to the secondary node retention indication or the secondary node release indication carried in the cell switching command.

[0381] Optionally, the target master node is transferred via radio resource control transfer (RRC Transfer) signaling.

[0382] Optionally, the radio resource control transfer signaling is used to send the first uplink data and / or RRC reconfiguration completion signaling to the target secondary node.

[0383] Optionally, when there is no signaling radio bearer 3 (SRB3) between the target secondary node and the terminal device, the first uplink data and / or RRC reconfiguration completion signaling is forwarded through the primary node.

[0384] Optionally, when a signaling radio bearer 3 exists between the terminal device and the secondary node, the terminal device may directly send the first uplink data and / or RRC reconfiguration completion signaling to the target secondary node.

[0385] Optionally, after switching to the target master node (eg, master node 2), the terminal device may also continuously switch to other master nodes (eg, master node 3).

[0386] In the technical solution of this embodiment, the network device and / or terminal device determines to retain or release the auxiliary node through the enhanced LTM pre-configuration content, and / or, the terminal device is instructed to retain or release the auxiliary node through the enhanced LTM switching command, and / or, the complexity of the processing mechanism of the terminal device and / or network device for the auxiliary node is reduced.

[0387] Ninth embodiment

[0388] 9 is a flow chart of a processing method according to a ninth embodiment. The method of this embodiment can be applied to a source master node and includes the following steps:

[0389] S1: Send configuration information and / or a switching command, so that the terminal device processes the secondary node based on the configuration information and / or the switching command.

[0390] Optionally, the source master node sends a switching request signaling to the candidate master node.

[0391] Optionally, the source master node sends a secondary node release request signaling to the secondary node.

[0392] Optionally, the source master node receives a switching request confirmation signaling sent by the candidate master node.

[0393] Optionally, the source master node sends the configuration information via radio resource control reconfiguration signaling.

[0394] Optionally, the source master node and the candidate master node are base stations of different central units.

[0395] Optionally, the handover request signaling and / or the handover request confirmation signaling carries a secondary node retention indication.

[0396] Optionally, the handover request signaling and / or the handover request confirmation signaling carries a secondary node release indication.

[0397] Optionally, the secondary node release request signaling carries a secondary node retention indication and / or a secondary node release indication.

[0398] Optionally, the secondary node release request signaling is used to instruct to retain or release the secondary node, and / or to instruct to perform LTM switching.

[0399] Optionally, the radio resource control reconfiguration signaling includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information.

[0400] Optionally, the terminal device processes the secondary node based on the configuration information and / or the handover command, including at least one of the following:

[0401] If the configuration information and / or the handover command includes a secondary node retention indication, the terminal device retains the secondary node;

[0402] If the configuration information and the handover command do not include a secondary node retention indication, the terminal device releases the secondary node;

[0403] If the configuration information and / or the handover command includes a secondary node release instruction, the terminal device releases the secondary node;

[0404] If the configuration information and the handover command do not include a secondary node release indication, the terminal device retains the secondary node;

[0405] If the secondary node retention indication is the first value, the terminal device retains the secondary node;

[0406] If the secondary node retention indication is the second value, the terminal device releases the secondary node;

[0407] If the secondary node release indication is the first value, the terminal device releases the secondary node;

[0408] If the secondary node release indication is the second value, the terminal device retains the secondary node;

[0409] If the multi-link dual-link secondary cell group configuration information is reserved, the terminal device retains the secondary node;

[0410] If the multi-link dual-link secondary cell group configuration information is released, the terminal device releases the secondary node.

[0411] Optionally, the processing method is applied to at least one of a master node handover between different central units, a master cell group LTM handover, and a dual link scenario.

[0412] Optionally, the configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information.

[0413] Optionally, the switching command includes a secondary node retention indication and / or a secondary node release indication.

[0414] Optionally, the secondary node retention indication and / or the secondary node release indication is indicated by a reserved bit.

[0415] Optionally, the secondary node retention indication and / or the secondary node release indication is indicated through a newly added field.

[0416] Optionally, in this embodiment, the master node initiates LTM (L1 / L2 Triggered Mobility) switching preparation for different central units, determines whether the candidate master node retains or releases the secondary node when performing LTM switching, and / or determines whether to retain or release the SCG (Secondary Cell Group) configuration.

[0417] Optionally, the interactive signaling between master nodes introduces indication information, including a secondary node retention indication (ltmKeepSCG) and a secondary node release indication (ltmReleaseSCG), which is used to indicate the retention or release of the secondary node. The retention or release of the secondary node and / or SCG configuration is determined by the master node.

[0418] Optionally, the source master node (Source Master Node) sends a handover request (HANDOVER REQUEST) signaling to the candidate master node (Candidate Master Node).

[0419] Optionally, the source master node is a base station to which the terminal device is initially connected.

[0420] Optionally, the candidate master node is a base station of a different central unit (Inter-CU), for example, a gNB.

[0421] Optionally, the number of candidate master nodes may be one or more, for example, master node 2, master node 3.

[0422] Optionally, the handover request signaling further carries at least one auxiliary node configuration information, including auxiliary node and terminal interface identifier (eg SN UE XnAP ID) and / or terminal context configuration, etc. For details, please refer to protocol TS 37.340.

[0423] Optionally, before sending the handover request signaling, the master node may also determine at least one secondary node configuration information and / or secondary cell group configuration information through a secondary node modification procedure (SN Modification procedure) initiated by the master node. For details, please refer to protocol TS 37.340.

[0424] Optionally, the handover request signaling may also be a newly introduced signaling, serving as interactive signaling between master nodes for configuring the Master Cell Group (MCG) LTM handover, such as MCG LTM Request.

[0425] Optionally, the handover request signaling further carries a secondary node retain indication or a secondary node release indication, for example, ltmKeepSCG or ltmReleaseSCG.

[0426] Optionally, the switching request signaling may also carry a terminal context keep indication (UE Context Kept Indicator). Optionally, the indication is used to inform other candidate master nodes whether to retain the auxiliary node when performing switching of master nodes of different central units. For example, when the switching request command exists and / or carries a terminal context keep indication, when the terminal performs LTM switching from other candidate master nodes to the source master node, the auxiliary node configuration is retained.

[0427] Optionally, the secondary node retention indication or the secondary node release indication is used to indicate retaining a secondary cell group (SCG) configuration or releasing an SCG configuration.

[0428] Optionally, the candidate master node sends a secondary node addition request (Secondary Node Addition Request) signaling to the secondary node.

[0429] Optionally, in response to receiving the switching request signaling sent by the source master node, the candidate master node sends a secondary node adding request signaling to the candidate secondary node.

[0430] Optionally, if the candidate master node decides to retain the source auxiliary node configuration, the auxiliary node addition request signaling carries the source auxiliary node configuration, configuration terminal context information and / or auxiliary node and terminal interface identifier (for example: SN UE XnAP ID), or, if the candidate master node decides not to retain the source auxiliary node configuration, the auxiliary node addition request signaling does not carry the source auxiliary node configuration information.

[0431] Optionally, the secondary node feeds back a secondary node addition request acknowledgment (Secondary Node Addition Request Acknowledge) signaling to the candidate master node.

[0432] Optionally, the candidate master node responds to the handover request sent by the source master node by feeding back a handover request acknowledgment (HANDOVER REQUEST ACKNOWLEDGE) signaling.

[0433] Optionally, different central unit switching configurations may be candidate master node LTM switching configurations, including random access configuration, CSI resource configuration, CSI reporting configuration, central unit identification information, and other contents.

[0434] Optionally, the handover request confirmation signaling further carries a secondary node retention indication or a secondary node release indication, for example, ltmKeepSCG or ltmReleaseSCG.

[0435] Optionally, the secondary node retention indication is used to indicate whether the target primary node retains the secondary node or releases the secondary node.

[0436] Optionally, the switching request confirmation information can also carry a terminal context retention indication, and the indication information is used to inform the source master node whether to retain the auxiliary node when performing a master node switch of a different central unit. For example: when the switching request command exists and / or carries a terminal context retention indication, when performing LTM switching from the source master node to other candidate master nodes, the auxiliary node configuration is retained.

[0437] Optionally, determining whether to release the source auxiliary node based on the auxiliary node retention indication includes: releasing the source auxiliary node configuration or retaining the source auxiliary node configuration, for example: when ltmKeepSCG is TRUE, it means retaining the source auxiliary node configuration; and / or, when ltmKeepSCG is False or ltmKeepSCG is not configured, it means releasing the source auxiliary node configuration.

[0438] Optionally, determining whether to release the source auxiliary node according to the auxiliary node release indication includes: releasing the source auxiliary node configuration or retaining the source auxiliary node configuration, for example: when ltmReleaseSCG is TRUE or ltmReleaseSCG is configured, it means releasing the source auxiliary node configuration; and / or, when ltmReleaseSCG is False or ltmReleaseSCG is not configured, it means retaining the source auxiliary node configuration.

[0439] Optionally, the secondary node retention indication is used to determine whether the secondary node configuration is released when the primary node performs LTM switching and / or LTM switching of different central units.

[0440] Optionally, the number of candidate master nodes is one or more, for example, master node 2, master node 3.

[0441] Optionally, the handover request confirmation feedback signaling also carries candidate master node data forwarding information, such as Xn-U location information.

[0442] Optionally, the handover request confirmation signaling may also be a newly introduced signaling used for interactive signaling between MCG LTM handover configuration master nodes, such as MCG LTM Request Acknowledge.

[0443] Optionally, the primary node instructs the secondary node to be retained according to a configuration method of enhancing the existing information field multi-link dual-link-secondary cell group configuration (mrdc-SecondaryCellGroupConfig).

[0444] Optionally, the main node determines whether the terminal device is in a dual-link scenario. If it is determined that the terminal device is in a dual-link scenario, it determines whether to retain or release the secondary node based on at least one of the secondary node retention indication, secondary node release indication, enhanced multi-link dual-link-secondary cell group configuration, and terminal context retention indication.

[0445] Optionally, the terminal device determines configuration information based on radio resource control reconfiguration signaling and / or LTM candidate cell configuration information, and determines whether to perform LTM switching on the target secondary node according to the secondary node retention indication and / or secondary node release indication in the configuration information.

[0446] Optionally, the LTM cell switching command carries a secondary node retention indication and / or a secondary node release indication.

[0447] Optionally, the terminal device determines whether to perform LTM switching on the target secondary node according to the secondary node retention indication and / or the secondary node release indication carried in the LTM cell switching command.

[0448] Optionally, the terminal device determines whether it is currently in a dual-link scenario. If the terminal device is in a dual-link scenario, it determines whether to retain or release the secondary node based on at least one of the secondary node retention indication and / or secondary node release indication and the enhanced multi-link dual-link-secondary cell group configuration.

[0449] In the technical solution of this embodiment, configuration information and / or switching commands are sent through the source master node, so that the terminal device processes the auxiliary node based on the configuration information and / or switching commands, improves the processing mechanism in the LTM switching process, clarifies the processing method of the auxiliary cell, and enables the LTM switching method to support switching between different central units, thereby improving the applicability and / or diversity of LTM switching.

[0450] Please refer to Figure 10, which is a schematic diagram of the structure of the processing device provided in an embodiment of the present application. The device can be installed in or is the terminal device (such as a mobile phone) in the above method embodiment. The processing device shown in Figure 10 can be used to perform some or all of the functions of the method embodiment described in the above embodiment. As shown in Figure 10, the processing device 1100 includes:

[0451] The processing module 1101 is configured to process the secondary node based on the configuration information and / or the switching command.

[0452] Optionally, the device further comprises at least one of the following:

[0453] The configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information;

[0454] The switching command includes a secondary node retaining indication and / or a secondary node releasing indication.

[0455] Optionally, processing the secondary node based on the configuration information and / or the switching command includes at least one of the following:

[0456] If the configuration information and / or the switching command includes a secondary node retention indication, retaining the secondary node;

[0457] If the configuration information and the switching command do not include a secondary node retention indication, the secondary node is released;

[0458] If the configuration information and / or the handover command includes a secondary node release instruction, releasing the secondary node;

[0459] If the configuration information and the switching command do not include a secondary node release indication, the secondary node is retained;

[0460] If the secondary node retention indication is the first value, the secondary node is retained;

[0461] If the secondary node retention indication is the second value, releasing the secondary node;

[0462] If the auxiliary node release indication is the first value, the auxiliary node is released;

[0463] If the auxiliary node release indication is the second value, the auxiliary node is retained;

[0464] If the multi-link dual-link secondary cell group configuration information is reserved, the secondary node is retained;

[0465] If the multi-link dual-link secondary cell group configuration information is release, the secondary node is released.

[0466] Optionally, the method further comprises at least one of the following:

[0467] The secondary node retention indication and / or the secondary node release indication is indicated by a reserved bit;

[0468] The auxiliary node retention indication and / or auxiliary node release indication are indicated through a newly added field;

[0469] The processing method is applied to at least one of the following scenarios: master node handover of different central units, LTM handover of a master cell group, and dual link handover.

[0470] The processing device provided in the embodiment of the present application can execute the technical solution shown in the above-mentioned corresponding method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0471] Please refer to Figure 11, which is a second structural diagram of a processing device provided in an embodiment of the present application. The device can be installed on or is the network device (such as the source master node) in the above method embodiment. As shown in Figure 11, the processing device 1200 includes:

[0472] The sending module 1201 is configured to send configuration information and / or a switching command, so that the terminal device processes the secondary node based on the configuration information and / or the switching command.

[0473] Optionally, the device further comprises at least one of the following:

[0474] The configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information;

[0475] The switching command includes a secondary node retaining indication and / or a secondary node releasing indication.

[0476] Optionally, the device further comprises at least one of the following:

[0477] Sending a handover request signaling to the candidate master node;

[0478] Sending a secondary node release request signaling to the secondary node;

[0479] Receive a handover request confirmation signaling sent by the candidate master node;

[0480] Sending configuration information via radio resource control reconfiguration signaling;

[0481] The secondary node retention indication and / or the secondary node release indication is indicated by a reserved bit;

[0482] The auxiliary node retention indication and / or auxiliary node release indication are indicated through a newly added field;

[0483] The processing method is applied to at least one of the following scenarios: master node handover of different central units, LTM handover of a master cell group, and dual link handover.

[0484] Optionally, the device further comprises at least one of the following:

[0485] The source master node and the candidate master node are base stations of different central units;

[0486] The handover request signaling and / or the handover request confirmation signaling carries the secondary node retention indication;

[0487] The handover request signaling and / or the handover request confirmation signaling carries a secondary node release indication;

[0488] The handover request signaling and / or the handover request confirmation signaling carries a terminal context retention indication;

[0489] The secondary node release request signaling carries a secondary node retention indication and / or a secondary node release indication;

[0490] The secondary node release request signaling is used to instruct to retain or release the secondary node, and / or to instruct to perform LTM switching;

[0491] The radio resource control reconfiguration signaling includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information.

[0492] Optionally, the terminal device processes the secondary node based on the configuration information and / or the handover command, including at least one of the following:

[0493] If the configuration information and / or the handover command includes a secondary node retention indication, the terminal device retains the secondary node;

[0494] If the configuration information and the handover command do not include a secondary node retention indication, the terminal device releases the secondary node;

[0495] If the configuration information and / or the handover command includes a secondary node release instruction, the terminal device releases the secondary node;

[0496] If the configuration information and the handover command do not include a secondary node release indication, the terminal device retains the secondary node;

[0497] If the secondary node retention indication is the first value, the terminal device retains the secondary node;

[0498] If the secondary node retention indication is the second value, the terminal device releases the secondary node;

[0499] If the secondary node release indication is the first value, the terminal device releases the secondary node;

[0500] If the secondary node release indication is the second value, the terminal device retains the secondary node;

[0501] If the multi-link dual-link secondary cell group configuration information is reserved, the terminal device retains the secondary node;

[0502] If the multi-link dual-link secondary cell group configuration information is released, the terminal device releases the secondary node.

[0503] The processing device provided in the embodiment of the present application can execute the technical solution shown in the above-mentioned corresponding method embodiment. Its implementation principle and beneficial effects are similar and will not be repeated here.

[0504] Refer to Figure 12, which is a schematic diagram of the structure of the communication device provided in this embodiment. As shown in Figure 12, the communication device 160 described in this embodiment can be the terminal device (or component that can be used for a terminal device) or network device (or component that can be used for a network device) mentioned in the aforementioned method embodiments. Communication device 160 can be used to implement the methods described in the aforementioned method embodiments corresponding to the terminal device or network device. For details, please refer to the description of the aforementioned method embodiments.

[0505] The communication device 160 may include one or more processors 161, also referred to as processing units, which may perform certain control or processing functions. Processor 161 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, while the central processing unit may be used to control the communication device, execute software programs, and process software program data.

[0506] Optionally, the processor 161 may also store instructions 163 or data (eg, intermediate data). Optionally, the instructions 163 may be executed by the processor 161 to enable the communication device 160 to execute the method corresponding to the terminal device or network device described in the above method embodiment.

[0507] Optionally, the communication device 160 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0508] Optionally, the communication device 160 may include one or more memories 162 , on which instructions 164 may be stored. The instructions may be executed on the processor 161 , so that the communication device 160 performs the method described in the above method embodiment.

[0509] Optionally, data may also be stored in the memory 162. The processor 161 and the memory 162 may be provided separately or integrated together.

[0510] Optionally, the communication device 160 may further include a transceiver 165 and / or an antenna 166. The processor 161 may be referred to as a processing unit, and controls the communication device 160 (terminal device, core network device, or wireless access network device). The transceiver 165 may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, and is used to implement the transceiver functions of the communication device 160.

[0511] Optionally, if the communication device 160 is used to implement operations corresponding to the terminal device in the above embodiments, for example, the transceiver 165 can receive configuration information and / or switching commands; and the processor 161 can process the auxiliary node based on the configuration information and / or switching commands.

[0512] Optionally, the specific implementation process of the processor 161 and the transceiver 165 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0513] Optionally, if the communication device 160 is used to implement operations corresponding to the network devices in the above embodiments, for example: the transceiver 165 can send configuration information and / or switching commands so that the terminal device processes the auxiliary node based on the configuration information and / or switching commands.

[0514] Optionally, the specific implementation process of the processor 161 and the transceiver 165 can refer to the relevant description of the above embodiments, which will not be repeated here.

[0515] The processor 161 and transceiver 165 described in this application may be implemented on an IC (Integrated Circuit), an analog integrated circuit, an RFIC (Radio Frequency Integrated Circuit), a mixed-signal integrated circuit, an ASIC (Application Specific Integrated Circuit), a PCB (Printed Circuit Board), an electronic device, etc. The processor 161 and transceiver 165 may also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N Metal-Oxide-Semiconductor), PMOS (Positive Channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0516] In this application, a communication device may be a terminal device (such as a mobile phone) or a network device (such as a master node or slave node), and the specific definition needs to be determined based on the context. In addition, the terminal device can be implemented in various forms. For example, the terminal devices described in this application may include mobile terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0517] Although the communication device is described above by taking a terminal device or a network device as an example, the scope of the communication device described in this application is not limited to the above-mentioned terminal device or network device, and the structure of the communication device may not be limited to Figure 12. The communication device may be an independent device or may be part of a larger device.

[0518] An embodiment of the present application further provides a communication system, including: a terminal device as in any of the above embodiments; and a network device as in any of the above embodiments.

[0519] An embodiment of the present application also provides a communication device, including a memory and a processor, wherein a processing program is stored in the memory, and when the processing program is executed by the processor, the steps of the processing method in any of the above embodiments are implemented.

[0520] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a master node). The specific reference needs to be clarified based on the context.

[0521] An embodiment of the present application further provides a computer-readable storage medium, on which a processing program is stored. When the processing program is executed by a processor, the steps of the processing method in any of the above embodiments are implemented.

[0522] In the embodiments of the communication device and storage medium provided in the embodiments of the present application, all technical features of any of the above-mentioned processing method embodiments may be included. The expansion and explanation content of the specification are basically the same as those of the embodiments of the above-mentioned methods, and will not be repeated here.

[0523] An embodiment of the present application further provides a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer executes the methods in the various possible implementation modes described above.

[0524] An embodiment of the present application also provides a chip, including a memory and a processor, wherein the memory is used to store computer programs, and the processor is used to call and run the computer programs from the memory, so that a device equipped with the chip executes the methods in the various possible implementation modes as described above.

[0525] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems. The serial numbers of the above embodiments of this application are for descriptive purposes only and do not represent the advantages or disadvantages of the embodiments. The steps in the methods of the embodiments of this application can be adjusted in order, combined, and deleted according to actual needs. The units in the devices of the embodiments of this application can be combined, divided, and deleted according to actual needs. In this application, for the same or similar terms, concepts, technical solutions, and / or application scenario descriptions, they are generally only described in detail the first time they appear. When they appear again, they are generally not repeated for the sake of brevity. When understanding the technical solutions of this application, for the same or similar terms, concepts, technical solutions, and / or application scenario descriptions that are not described in detail later, reference can be made to the relevant detailed descriptions that precede them. In this application, the descriptions of each embodiment have their own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The various technical features of the technical solution of this application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0526] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the method of each embodiment of the present application.

[0527] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk (SSD)).

[0528] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A processing method, applied to a terminal device, wherein: Includes steps: S2: Processing the secondary node based on the configuration information and / or the switching command.

2. The method of claim 1, wherein: Also includes at least one of the following: The configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information; the switching command includes a secondary node retention indication and / or a secondary node release indication.

3. The method of claim 2, wherein: Step S2 includes at least one of the following: If the configuration information and / or the switching command includes a secondary node retention indication, retaining the secondary node; If the configuration information and the switching command do not include a secondary node retention indication, the secondary node is released; If the configuration information and / or the switching command includes a secondary node release indication, releasing the secondary node; If the configuration information and the switching command do not include an auxiliary node release indication, the auxiliary node is retained; If the auxiliary node retention indication is the first value, the auxiliary node is retained; If the auxiliary node retention indication is the second value, releasing the auxiliary node; If the auxiliary node release indication is the first value, the auxiliary node is released; If the auxiliary node release indication is the second value, the auxiliary node is retained; If the multi-link dual-link secondary cell group configuration information is reserved, the secondary node is reserved; If the multi-link dual-link secondary cell group configuration information is release, the secondary node is released.

4. The method as claimed in claim 2, wherein: Also includes at least one of the following: The auxiliary node retention indication and / or the auxiliary node release indication is indicated by a reserved bit; The auxiliary node retention indication and / or the auxiliary node release indication are indicated through a newly added field; The processing method is applied to at least one of the following scenarios: master node switching of different central units, LTM switching of a master cell group, and dual link switching.

5. A processing method, applied to a source master node, wherein: Includes steps: S1: Send configuration information and / or a switching command so that the terminal device processes the secondary node based on the configuration information and / or the switching command.

6. The method of claim 5, wherein: Also includes at least one of the following: The configuration information includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information; the switching command includes a secondary node retention indication and / or a secondary node release indication.

7. The method of claim 6, wherein: Also includes at least one of the following: Sending a switching request signaling to the candidate master node; Sending a secondary node release request signaling to the secondary node; Receiving a switching request confirmation signaling sent by the candidate master node; Sending configuration information via radio resource control reconfiguration signaling; The auxiliary node retention indication and / or the auxiliary node release indication is indicated by a reserved bit; The auxiliary node retention indication and / or the auxiliary node release indication are indicated through a newly added field; The processing method is applied to at least one of the following scenarios: master node switching of different central units, LTM switching of a master cell group, and dual link switching.

8. The method of claim 7, wherein: Also includes at least one of the following: The source master node and the candidate master node are base stations of different central units; The handover request signaling and / or the handover request confirmation signaling carries the secondary node reservation indication; The handover request signaling and / or the handover request confirmation signaling carries a secondary node release indication; The handover request signaling and / or the handover request confirmation signaling carries a terminal context retention indication; The secondary node release request signaling carries a secondary node retention indication and / or a secondary node release indication; The auxiliary node release request signaling is used to indicate the retention or release of the auxiliary node, and / or to indicate the execution of LTM switching; The radio resource control reconfiguration signaling includes at least one of a secondary node retention indication, a secondary node release indication, and multi-link dual-link secondary cell group configuration information.

9. The method of claim 6, wherein: The terminal device processes the secondary node based on the configuration information and / or the switching command, including at least one of the following: If the configuration information and / or the switching command includes a secondary node retention indication, the terminal device retains the secondary node; If the configuration information and the switching command do not include a secondary node retention indication, the terminal device releases the secondary node; If the configuration information and / or the switching command includes a secondary node release indication, the terminal device releases the secondary node; If the configuration information and the switching command do not include an auxiliary node release indication, the terminal device retains the auxiliary node; If the secondary node retention indication is the first value, the terminal device retains the secondary node; If the secondary node retention indication is the second value, the terminal device releases the secondary node; If the secondary node release indication is the first value, the terminal device releases the secondary node; If the secondary node release indication is the second value, the terminal device retains the secondary node; If the multi-link dual-link secondary cell group configuration information is reserved, the terminal device reserves the secondary node; If the multi-link dual-link secondary cell group configuration information is released, the terminal device releases the secondary node.

10. A communication device, wherein: include: A memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program implements the steps of the processing method according to claim 1 or 5 when executed by the processor.

11. A storage medium, wherein: The storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the processing method according to claim 1 or 5 are implemented.

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